Feeder for grain-mills.



.No. 867,490. PATENTED OCT. 1, 1907.

J. H. FELDBRMAN.

FEEDER FOR GRAIN MILLS.

APPLICATION FILED AUG. 7. 1905.

WITNESSES? //VVENTO7 44 41, Alf/aways,

-. T o-all whoin-it may PATENT QFFIC-E.

1 UNITED STATES JOHN ,H, awns-MAN, OFBELLEYUE, IOWA.

- manna iron GRAIN-MILLS.

1 no. see-pep.

, Be it known thatI, JonN'lEL n wsman, a citizen of the United States, residingat Bellevue, in the county of Jackson and'State of lowa, have invented. certain new and. useful' Improvements in Feeders for Grain-'hiills, of which the following is a specification.

Myiinven'tion relates to feeders forgrain mills, and consists' in' adjustable means for feeding the grain evenly and for preventing stone, pieces of metal and v whereby. myobjects are obtained.

other foreign substances from entering the mill.

- "The following specification and accompanying drawings, will point out in detailthemo de of construction- I Figure 1 is a side elevation of the device attached to a Fig, 2, is an enlarged sectional fragmen-' View oitheinventiomliig. 3, is an end view in el'evatiorr'of the.same,and Fig. 4, is a top plan fragmentary view, parts being shown in section.

I Referring tothe drawings, 2 designates the inclosure or externalparts of a grindingmill, 4 the hopper, 5' the 'wheel'attached to the grinding shaft to operate the i grinding burs; 'Over the hopper4 is a plate 6 pivoted to thetopof the hopper 4 or top of the back of the mill and terminates at one end in a ball 7. To this plate "is secured by sidepieces 8 over the hopper 4, a sieve or screen 10..

- For the purpose of adjusting the screen 10 to a greater or less angle with reference to the top .of the hopper 4, thecpivot .12 on which the screen vibrates or turns, is provided with a shoulder 14 and on this shoulder rests a washer 15 and the base of the pivot pin is secured to the rear end of the hopper 4 with a nut 16 at the top. By this mode .of construction, when the nut 16 is left loose, the forward end of the screen will drop. down-on the front end of the hopper 4 which is lower than the plane of the screen by the thickness of the plate .6, as shown in Fig. 2, and when the nut is v tightened, it will bev raised above, to the plane of the top of the plate 6'. In this manner the screen can be .40

adjusted to the desired angle to meet the demands of the different size of the grain and regulate the feed into the hopper. p

, Overthe screen is placed a hopper 20; This hopper may be attached to the sides of the mill o to the lower h pp In the rear of the hopper 4 is an opening 22 and around this opening is secured an. air box 24 which terminates.

. in an inclosed passage 25 connected to a fan in a casing 26. This fan may be operated in any wellknown 50 upon a shaft which rotates the fan.

manner by a belt passing over the pulley 28 fixed Ifpr the purpose of operating the screen and imparting'Fto it a reciprocating or vibrating motion, the shaft which carries the wheel 5 and operates the grinding burs, cxt'ends out beyond the wheel 5. To thisis at- Patented Oct. 1, 1907.

tached a. wheel 34 and to the side of this wheel at one side ofthe center is secured a crank 35 to which a pitman 36 is attached This pitman is formed into a socket 38 at its other end and engages the knob or ball 7 on theplate 6, forming a ball and socket joint. To the side of the hopper 4 is secured an arm 40 which extends out and is provided with a slot 42 in which the plate 6 is vibrated and by means of which the plate is held steady or in the same plane While it vibrates.

' The mode of operating my device is substantially as the wheel 34. As the wheel 34 rotates, it operates the pitman 36 and as the pitman 36 is attached to one side of the wheel 34, at each rotation, the pitman will reciprocate the plate 6 in the slot 42 and as the plate 6 is pivoted at its center, it will reciprocate upon its pivot the forward end of the screen 10, and the grain will ,pass through the screen 1) and into the hopper 4, but the larger substance like stone, 'will not pass through the screen, butwill be shaken off over the end of the screen.

When the grain to be sifted or ground is finer, the

forward end of the screen is released by releasing the nut 16 and allowing the screen to drop down nearly to the top of the hopper 4 and by tightening the nut, the screen may be maintained at nearly a horizontal plane, just enough pitch to it to carry off all 'of that which cannot pass through the meshes of the screen.

' It will be noticed that the screen 10, by its position and attachment to the plate 6, will so control the feed into the hopper 4, that there will be a uniform feed fromall parts of the screen and the grinding burs will never become clogged or overfed.

When it is desired to take out all of the sand and dust before it is passed into the grinding machine, the fan in the rear in the casing 26 is set in motion andthe air is driven along the tube 25 through the opening 22'andv underneath the screen 10 and forces all of the dirt and dust out underneath the screen and over the hopper 4 It will be seen that, by this mode of construction, no stones, nails,'and the like, will b'eallowed to pass into the grinding mechanism and injure it, nor will there be any dust or dirt to injure the meal or flour when ground, and all of the parts are adjustably secured to- 'gether whereby itmay be adapted for use with grain of'different size and. different degrees of cleanliness, and the uniformity of thefeed to the grinding mechanism will insure uniformity of product. j

Having now described my invention, whatl claim and desire to secure by Letters Patent is,

' 1. In a device of the character described, the combination with u hopper, of a screen, a pivot pin on one end of the hopper, a shoulder on said pivot pin disposed. in a. plane above the hopper, said screen disposed above the hopper and pivotully supported or lateral oscillation on flusaid pivot pin, and :1 nut threaded on the upper (rid with :1 vcrticnily projncting pin, :1 smvrn pivnlvd coutmlly ut' the pivot. pin for venticai mnvomum. thereon and vngngin; H115 said sclQt-n for regulating the dip thereof.

2. hi a device of the character described, upprr and lawn! lmppr'rs, a vertical pin provided on the lower huppor, :i \crm-n pivumlly supported on said pin for lflLQl'ill (mail- Iarinn' hrtw en tho hnpprrs, and a nut threaded on said pin [or rvguiniing thov dip of tho screen.

:4 In durim- (if the chnrnctmdvscrihod, 1hr cmnhinn 10 Hull with :1 hnppvr providod crnlrally of our 01 itsflnds hf 011L- of its finds on and supportmi h said pin. and means nmvuhlo U11 said pin for rrgulating tho dip of \hu screen.

In lm-slimony win-roof I :lfljx my sigimiurv in presence JOHN H. FELIHGRMAN.

\Yitnvssn Gl-Zll. KnnxmrAN, II. II. ICxm-mmax'. 

